7 Lesser-Known Giant Dog Breeds with Exceptional Loyalty

Everybody knows the Great Dane. Everybody has met a Saint Bernard in a movie. And German Shepherds are basically celebrities at this point.

But there is a whole world of giant dog breeds that most people walk right past. Massive, loyal, incredibly loyal dogs who don’t get nearly enough attention. Some of the most devoted companions, loving and impressive dogs alive.

We have rounded up some lesser-known giant dog breeds with exceptional loyalty.

Big dogs with big hearts and a gentle nature that make them absolute treasures.

Ready to meet them?

Let’s go!

Lesser-Known Giant Dog Breeds with Exceptional Loyalty

1. Black Russian Terrier

Despite the name, the Black Russian Terrier is not a true Terrier.

Not even a little bit. They are working dogs.

These Russian dogs were developed by the Soviet military in the 1930s by crossing 17-20 different breeds, as noted by WebMD, including Rottweilers, Giant Schnauzers, and Airedale Terriers. The goal was to create the ultimate working dogs.

A large dog breed that was powerful, intelligent, loyal, and could handle brutal Russian winters without complaining.

Mission absolutely accomplished.

Black Russian Terriers are giant dog breeds through and through. Males can hit 130 pounds, but the loyalty packed into that frame is something else.

They bond deeply with family members. Plus, they are naturally protective without being overly aggressive and have an affectionate nature that surprises people who only see the intimidating appearance first.

Highly trainable and genuinely intelligent dogs, they need experienced dog owners and proper obedience training to channel that energy well.

Active lifestyle, regular exercise, and regular grooming for that thick double coat, is all they need.

For a devoted companion who takes loyalty seriously, these large dogs are wildly underrated.

2. Neapolitan Mastiff

The Neapolitan Mastiff looks like someone took a regular dog, inflated it, and then added approximately forty extra pounds of wrinkles and personality.

This Mastiff-type dog breed is enormous, dramatic, and one of the most loyal, devoted dogs you will ever meet. Once you meet that trust.

And yes, Fangs from Harry Potter is this breed. Connect the dots.

The Neapolitan Mastiff has a long history as a guard dog going back to ancient Rome, and they haven’t changed much since. What you get today is that same steady dog with a protective nature in a slightly more domesticated package.

Calm at home, gentle giants for family, and with a relaxed lifestyle vibe that makes them easy to live with. These wrinkly dogs with floppy jowls drool a lot. That’s the deal. But their loyalty is profound. These dogs form strong bonds and take them seriously.

Gentle giants who just happen to look like they could stop a car.

3. Scottish Deerhound

The Scottish Deerhound is basically a Greyhound that went through a medieval makeover.

These dogs are tall, shaggy, dignified, and have this wonderful calm about them that makes spending time with one feel genuinely relaxing.

These tall dogs were originally bred to hunt deer in the Scottish Highlands. A job that required them to have incredible speed, stamina, and the ability to work independently across rugged terrain.

As per PetMD, these calm giant dogs are more laid back than any other breed. Despite that athletic build, they are quiet, gentle dogs that are easygoing companions. On top of that, they are affectionate with family, great with kids, and calm enough for a relaxed life.

As long as they get their outdoor adventures. Yes!

Often compared to the Irish Wolfhound in temperament, similarly gentle, similarly loyal, similarly likely to try sitting on your lap despite being a large dog breed.

Their wiry double coat is low-maintenance compared to other large breeds. And, their gentle disposition makes them great for families who want something a little more unusual.

4. Dogue De Bordeaux

The Dogue De Bordeaux, also called the French Mastiff, is one of the oldest and most ancient large dog breeds in France, with a history stretching back to the 14th century.

You might recognize it from the 1989 movie Turner & Hooch. The dog who destroyed everything within reach but was impossible not to love. Accurate representation, isn’t it?

The Dogue De Bordeaux is an incredibly loyal and deeply affectionate giant dog with solid protective instincts. This mix makes them wonderful family companions.

As per Purina, these devoted dogs bond intensely with their people and follow family members from room to room. That’s not neediness but devotion.

Calm and gentle with kids and other pets they know, but proper training and early socialization matter for a dog this size. They are not really high-energy dogs; they enjoy a relaxed lifestyle without hours of vigorous exercise.

They need your time, company, and the occasional drool towel. Worth every bit of it.

5. Tibetan Mastiff

The Tibetan Mastiff is the dog that makes people stop walking and just… stare.

That massive double coat, that serious expression, that undeniable presence, the Tibetan Mastiff is one of the visually spectacular giant dog breeds. They were originally bred in the Himalayas to guard monasteries and livestock from wolves and snow leopards. Cool job.

As per the American Kennel Club, Tibetan Mastiffs are fiercely protective of their family and deeply loyal to the people they love. But that loyalty is earned.

Naturally reserved with strangers and independent by nature, not the dog that rushes to greet every new face at the door. They observe first. Decide later.

Best suited to experienced dog owners who understand giant breeds. But inside the family circle, this is a devoted companion like few others. Calm, protective, deeply bonded. One of the truly great, gentle giants hiding in plain sight.

6. Irish Wolfhound

The Irish Wolfhound is, in the most literal sense, a historic hound.

These hound dogs were gifted between kings, used to hunt wolves across Ireland, and referenced in literature going back thousands of years. They are the tallest dog breed in the world. Males regularly hit 32 inches at the shoulder, and they carry that height with a gentle grace.

Irish Wolfhounds are one of the most gentle, calm, and affectionate dogs alive. All that size, all that history, all that presence, and at home, they are just soft. Incredibly patient and kind with kids, great with other dogs and other pets.

Their loyal and gentle disposition makes them incredible companions. But their intimidating size means space and regular exercise matter for staying healthy.

Their lifespan is shorter than that of smaller breeds, 6 to 8 years, the one heartbreaking trade-off of loving a dog this large.

But Irish Wolfhound owners will tell you: every single year is worth it with these tall and skinny dogs.

7. Greater Swiss Mountain Dog

The Greater Swiss Mountain Dog, Swissies, to their friends, is the working dog that Switzerland never fully got credit for.

These large dogs were originally bred to pull carts, herd cattle, and do heavy farm work across the Swiss Alps. As per Omlet, they were nicknamed “poor man’s horse” because of their impressive ability to pull.

They are powerful, sturdy, and built for real work. But bring one home, and you will find something unexpected because these are one of the most playful, affectionate, and joyful large dog breeds.

Greater Swiss Mountain Dogs are loyal to their core, wonderful with family, and have a gentle nature that makes them great companions for kids. They are incredibly gentle and enjoy outdoor adventures.

Their striking tri-color coat, black, white, and red, turns heads everywhere they go. And their easygoing personality makes them instantly lovable.

They do need regular exercise and some obedience training to keep that working-dog brain engaged. But they respond well and enjoy the interaction.

If you want a giant dog that has loyalty, warmth, playfulness, and a good dose of Swiss dependability for your family and children, the Greater Swiss Mountain Dog is one of the best.

Conclusion

Giant dog breeds get a reputation for being intimidating. And sure, the size is real.

These are the lesser-known giant dog breeds that make a great choice as a home buddy. They have loyalty with a unique charm. No matter if they are royal dogs, have webbed feet or six toes, are highly intelligent or goofy ones, they provide plenty of companionship for their human family.

The world has plenty of pups. But a giant dog with large size and exceptional loyalty…

That’s something else entirely. And it is worth finding.